<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>过滤器的使用</title>
</head>
<body>
  {{name | length}}<br>
  {{time | dformat}}<br>
  default过滤器{{var|default('admin',boolean=True)}}<br>
  upper过滤器:{{list|upper}}
</body>
</html>